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如图,在△ABC中,AB=AC,D为BC上一点,∠B=30°,连接AD.(1)若∠BAD=45°,求*:△AC...
如图,已知△ABC.(1)画中线AD.(2)画△ABD的高BE及△ACD的高CF.(3)比较BE和CF的大小,...
若﹣1<a<0,则a,,a2的大小关系是(  )A.a<<a2B.<a<a2C.<a2<aD.a<a2<
  • 若﹣1<a<0,则a,,a2的大小关系是(  )A.a<<a2B.<a<a2C.<a2<aD.a<a2<

  • 问题详情:若﹣1<a<0,则a,,a2的大小关系是()A.a<<a2B.<a<a2C.<a2<aD.a<a2<【回答】B【考点】有理数大小比较.【分析】取a=﹣,求=﹣2,,再根据﹣、﹣2、进行比较即可.【解答】解:∵﹣1<a<0,<a<0,a2>0,∴a2>a>,故选:B.【点评】本题考查了有理数大小比较的应用,解此题的关键是取一个符合条件的一个数,﹣1<<0,题目较好,但是一道比较容易出错...
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如图,⊙O中,直径CD⊥弦AB于E,AM⊥BC于M,交CD于N,连AD.(1)求*:AD=AN;(2)若AB=...
比较下列各组线段的长短(1)线段OA与OB.                     (2)线段AB与AD. ...
如图,AB为⊙O的直径,点C,点D是⊙O上的两点,连接CA,CD,AD.若∠CAB=40°,则∠ADC的度数是...
下列运算错误的是(  ) A.=1B.x2+x2=2x4 C.|a|=|﹣a|D.=    
如图,在中,.(1)尺规作图:作的外接圆;作的角平分线交于点D,连接AD.(不写作法,保留作图痕迹)(2)若A...
如图,已知(  )A.B.C.D为圆上四点,弧AD.弧BC的度数分别为120°和40°,则∠E=
下列有关油脂的叙述错误的是(  )A.油脂属于酯类B.植物油能使溴水褪*C.油脂能溶解维生素AD.油脂的水解反...
如图,AB=AC=AD,若AD∥BC,∠C=78°,∠D=    .
  • 如图,AB=AC=AD,若AD∥BC,∠C=78°,∠D=    .

  • 问题详情:如图,AB=AC=AD,若AD∥BC,∠C=78°,∠D=  .【回答】39°.【解答】解:∵AB=AC=AD,∴∠C=∠ABC,∠D=∠ABD,∴∠ABC=∠CBD+∠D,∵AD∥BC,∴∠CBD=∠D,∴∠ABC=∠D+∠D=2∠D,又∵∠C=∠ABC,∴∠C=2∠D.∵∠C=78°,∴∠D=39°,知识点:平行线的*质题型:填空题...
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AD 2000造句怎么写
  • AD 2000造句怎么写

  • Forexample,theyearAD2000isequaltotheyear2543BE.DevelopAutoCAD2000withVB;ShowingFEMStresswithAutoCAD2000VBA...
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ad造句怎么写
  • ad造句怎么写

  • That'saninterestingad.aclassifiedad[advertisement]AnadvertisercancreateanAD.So,searchisonlyonepartoftheadmarket.Thoseadduptoaround25minutesofADtime.Anad-servingplatformthatanalyzesproduct-specificshopperbehaviorandbuyerintenttodecidewhatADtoserveinr...
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.如图,在△ABC中,AD是中线,求*:AD<(AB+AC).
  • .如图,在△ABC中,AD是中线,求*:AD<(AB+AC).

  • 问题详情:.如图,在△ABC中,AD是中线,求*:AD<(AB+AC).【回答】*:延长AD到点E,使DE=AD,连接BE,∴AE=2AD.∵AD是中线,∴BD=CD.在△ACD和△EBD中,∴△ADC≌△EDB(SAS),∴AC=BE.在△ABE中,∵AE<AB+BE,∴2AD<AB+AC,∴AD<(AB+AC).知识点:三角形全等的判定题型:解答题...
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ad val造句怎么写
  • ad val造句怎么写

  • AdvaloremdutyoradvaloremtaxadvalorempropertytaxoilandgasproductionequipmentadvaloremtaxAcompoundtariffisacombinationofaspecificandanadvaloremtariff.Compounddutiesareacombinationofspecificandadvaloremduties...
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如图,AD⊥AE,AB⊥AC,AD=AE,AB=AC.求*:△ABD≌△ACE.               ...
ad nauseam造句怎么写
  • ad nauseam造句怎么写

  • Alright,solet'snowstartdoingmoreinterestingthingshellothanjustsayinghelloadnauseamtoourselves.Theprimeminister’sfavouritepronouncement,whichhelikestorepeatadnauseam,isthathisgovernmentwillnever“putitshandsinthepocketsoftheItalianpeople”....
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如图,AC⊥BC,AD⊥BD,AD=BC,AD,BC交于O.求*:OC=OD.
Asicklittlegirlisbeingkeptalivethankstoherbestfriend—ad...
  • Asicklittlegirlisbeingkeptalivethankstoherbestfriend—ad...

  • 问题详情:Asicklittlegirlisbeingkeptalivethankstoherbestfriend—adogwhocarriesheroxygentankonhisback.Alida’sfaithfuldogcompanionMrGibbshasbeenspeciallytrainedtoshepherdthethree-year-old,whobreathesthroughatubemostofthetime.Hefollowshercloselyassheplay...
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local ad造句怎么写
  • local ad造句怎么写

  • Herlocaladmirersbeatapathtoherdoor.Bylaunchinglocal-languagewebsites,teamscantailormarketingtofitanindividualcountry,drumminguplocaladvertisingandsponsorshiprevenue.Wemustdevelopindustrieswithlocaladvantagesandpropelthedevelopmentofkeyareas....
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如下图,CD⊥AD,CB⊥AB,AB=AD,求*:CD=CB.
  • 如下图,CD⊥AD,CB⊥AB,AB=AD,求*:CD=CB.

  • 问题详情:如下图,CD⊥AD,CB⊥AB,AB=AD,求*:CD=CB.【回答】*:连结AC,CD⊥AD,CB⊥AB∴在Rt△ADC和Rt△ABC中∴Rt△ADC≌△Rt△ABC(HL)∴CD=CB.(本题也可用勾股定理直接*)知识点:三角形全等的判定题型:解答题...
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如图,已知AB∥DC,AD∥BC.*:(1)AB=CD;(2)AD=BC.
 Ad-makerschoosewordsandbrandnamesverycarefullyinordert...
  •  Ad-makerschoosewordsandbrandnamesverycarefullyinordert...

  • 问题详情: Ad-makerschoosewordsandbrandnamesverycarefullyinordertomakeacreativeimageoftheproducttheyare_________.      A.processing       B.producing            C.providing          D.promoting【回答】D知识点:动词题型...
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AD
  • AD

  • 问题详情:AD【回答】如图8所示,光滑固定导轨M、N水平放置,两根导体棒P、Q平行放于导轨上,形成一个闭合回路,当一条形磁铁从高处下落接近回路时()A.P、Q将相互靠拢      B.P、Q将相互远离C.磁铁的加速度仍为g   D.磁铁的加速度小于g知识点:楞次定律题型:多项选择...
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briefly ad造句怎么写
  • briefly ad造句怎么写

  • Amomentlatertheouterdooropened,brieflyadmittingsunlight,thenYvettewasgone.ThewindownarrativeoftheshallowlotusgreenupusesilkthreadtobrieflyadorntojoinDilotuspattern....
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